Trolley-harp



` J. BASIL AND F, GIRARDI.

y U ED STATES PATENT FETE.

JOSEPH BASIL AND FRANK GIRARDI, 0F DETROIT, MICHIGAN.

TROLLEY- HABE Specification of Letters Patent. Patentd Jun@ 10 1919.

Application led January 2, 1919. Serial No. 269,213.

trolley harp, and eliminate as near as pos-l sible the trouble nowexperienced by trolley wheels leaving the trolley wires or conduc` tors,particularly when encountering irregu-V` lar sections of trolley wire,traveling at high speed and encountering switches, guard boards, and thelike. Our improved trolley harp includes auxiliary wheels coperatingwith a main wheel in establishing a running connection between thetrolley harp and its wire, said auxiliary wheels being constructed so asto yield when wire hangers are encountered and also yield to permit ofthe trolley harp being lowered. The novel construction entering into theharp will be hereinafter considered and then claimed, and reference willnow be had to the'drawings, whereinl Figure 1 is a side elevation` ofthe trolley harp, partly broken away and partly in section Fig. 2 is aplan of the harp, p artly broken away'and partly in section;

' Fig. 3 is an end view of the harp partly"v broken away and partly insection; .and y Fig. 4 is a detail sectional view of one of theauxiliary trolley wheels provided with an anti-frictional device. ,f

In the drawing, the reference numeral 1 denotes a portion of the trolleypole, and mounted on the upper end thereof is a socket 2 supporting aharp plate 3. At the forward end of said harp plate is a bearing 4 forthe spindle 5 of a main harp G, said spindle hav. ing a head 7 rotatablein the bearing 4. The spindle 5 extends through the bearing and has thelower end thereof provided with a coiled spring 8 and this springpermits vertical movement of the head 7 in the bearing 4 butpreventssaid head from becoming accidentally dis laced.

Journalec in the main harp 6 is a main trolley wheel 9 adapted torevolve against the trolley wire 10, said wheel and wire being of theordinary and well known type.

On the rear end of the harp plate 3 is a two part block 11, and at thesides of said block are sets of apertured ears 12, one `set beingdisposed in advance of the other. Pivotally mounted between theapertured ears 12 are the lowerrends of cylinders 13 and slidable insaid cylinders are the heads 14 of plungers 15 said plungers extendingthrough caps 16 screwed on the upper ends of said cylinders. Inthecylinders are coiled expansion springs 17, the expansive force of saidsprings maintaining the plungers 15 normally elevated.

Rotat'able on the upper ends of the plungers 15 arev horizontallydisposed trolley wheels 18'engaging opposite sides of the wire 10, andthese auxiliary trolley wheels are adapted to coperate with the mainwheel 9 in retaining the trolley harpv in operative relation to the wire10. In some instances the auxiliary wheels 18 may have hub portions 19provided withV antifrictional bearings 20,

4preferably in the form of balls that will engage a guard or` bridgeboard when the harp passes therebeneath and assist in preventing theAharp from vbeing displaced.

Engaging the cylinders 13 are the curved outer ends of springs 21mounted on the block 11 and these springs are adapted to maintain thecylinders 13 normally in a vertical position against the side walls ofthe block 11.

lSlidable in the block 11 between the parts "thereof, is 'a rod 22 which`has the forward end thereof terminating in an eye 23 connected to acable 24 said cable extending over a sheave 25 on the plate 3 andthrough an opening 26 provided therefor in said plate. The cable 24constitutes a trolley rope and permits 0f the conductor or opera.-

tor of a car lowering the trolley harp.

On the rear end of the rod 22 is a coiled retractile spring 27 andintermediate the ends of said rod are side arms 28, said arms extendinginto slots 29 in the side walls of the block 11. The arms 28 engageinwardly projecting beveled lugs 30 on the cylinders 3 and when thecable 24 is pulled upon to remove the harp relative to the wiring, thearms 28 of said rod force or kick the lugs 30 outwardly, therebyshifting the cylinders 13 away from the block 11 and sufficientlyseparating the auxiliary trolley wheels 18 to permit of the trolley harpbeing lowered,

The` upperl beveled edges of the auxiliary -Wheels V18 Will" permit` of'the ha'rp being snapped into engagement with the Wire 110) but when thepole l is manipulated through' the medium of the cable 24k, the arms 28of the rod 22 will maintain the wheels 1-8' in an open position untilthe main trolley Wheel 9 is on a Wire, then byv'rlas'i'iig" the" cable24, the spring restores the rod 22 toinolfmal Vposition alloyyi'n'giftheeylindeIs' 13 to engage the sides of the 'bloeh 1l and posi'-`tioi'rthe auxiliary trolley ufheels 1S on the of; 'maken the een afa'of; Sala plate, eylincliersfpiyotecl sides`A of .saidj block,` spring-pressed nlungers in saidylinders', and exteaaig ont' f Saiacyiinaegrinte aplen's., aber' fsa-itl' blde liorzdtal'y dis-` paedaukl. Irl.#1501165 ,wheels Oath@ vanali engeland amiga-e; ingansgcariea by gaiabloel; maintaining cylinders' against" bloel, ,and means linovable,longitud; nally ofsailubllv"` for. sfhift-in s'aigd ylinders out ofengagementwith saidbloek: 2A nella here Qfwrsnea niet@ a main trolleyivheel on the forward eid there- 0f, 21 Jbleek 0.a tharr-lefl 0f ,thePlate; cylinders .pivoted L'on said )'late at the sides .of said blooli;Yrotatable horizontally dis- Y posed auxiliary trolley Wheels supportedabove said cylinders, means on said block engaging said eylindersztozmaintan said cylinders normally against said block, andneaiis'ishiftable longitudinally in said block adapted when shifted toforce said cylinders outwardly from said block. Y

3. A trolley harp comprising a. plates, a

trll'yayleel* on the forward end thereof, a block on the rear end ofsaid harp plate, piyoted verticallyt disposed cylinders e'aiie'fcl bysaid harp plate at the' sides of Sad bilclz', 'spin-ig messed piangerein said cylinders and etediniiout f the ofl'iders, al'liiliary tolleyli'llie'ls'L l upl'jote'd by'y the' u'1a15e1'` endsof s'aidi-fpluige'sgrod slid'able` in said bloel'', a attached to said rod for moving" saiddrod vin `one"Adire'etion,A af! spring on? sai'd od'adanted to shift saidrod in. Q15 "os'te dietio; anclne`a'11's`ear'lijed by said rqdalcivadaptedf tesina saidfcyundersfoutyvadly from' said bleek tose'iai'fa'te' said' auxiliary trolley' x'vlfi`e`els.

,4,1 t'illey' haria` eonlpi'sfin,qg a plate', a main troley Wheel at thefovad'end of saiidr plate, a block on th re'ar' endY of said plate,cylinders piy'otedo rid la't'e' the' Sides rof saifdbloek auxiliarytrolley Wheels supported from said C y'flinclers';` a' redshiftable insaid block, arms carriedhayv said rod, lugsonslaid cylinderseXtending-into sai-dy block and engaged said garinslf, and i'iresinscomireet'ad toifsaid" rod adapted' 'for sliilitinglV said ro'd' and,Causing" said cylinders. to sena-Y ra'te the' arixi'liary trolley WheelsVsii'pigorted In testimony Whereofueaix our 'signatures in presence oftiiioyyitnesses. BSL Y FRANK Giannini.,

llitnesses:av 1 KARL" BUTLER, ANNA M. DoizR.

eagles i als' man sa? te taia fffigfjelents een falesia-g aie#60ans-sana af mais; Walshi'iton, D. C.

